Ensuring the required shape accuracy of long flat parts made of VNS-2 steel during flat grinding due to variable parameters of cutting modes and heat treatment

This article reveals the possibility of ensuring the required accuracy of the shape of the surfaces of long flat parts made of VNS-2 steel by assigning rational parameters of cutting modes and heat treatment. For chromium-nickel steels of the martensitic class, there is a problem of their mechanical processing due to the large number of alloying elements. Steel also has a tendency to absorb the energy released during machining, which can subsequently lead to energy accumulation and its manifestation in the form of deformation. This strongly affects the formed parameters of the shape accuracy of the treated surfaces and, in some cases, the required tolerance value is not provided. The riveting shows the ratio of increased hardness relative to the initial one and can be used as one of the ways to control the occurrence of possible residual deformations in the surface layers of products. The microstructure of the surface layer is of no small importance, which has a significant impact on the resulting energy consumption during machining, as well as on the possible increase or decrease in the riveting. Conclusions are drawn based on the obtained research results.